Anode target, ray light source, computed tomography scanning device, and imaging method

Abstract

An anode target comprises: a plurality of target structures, used for receiving an electron beam emitted by a cathode to generate a ray, the plurality of target structures being of three-dimensional structures having bevels; a copper cooling body, used for bearing the target structures and comprising an oxygen-free copper cooling body; a cooling oil tube, used for cooling the anode target; and a shielding layer, used for achieving a shielding effect and comprising a tungsten shielding layer. The anode target, the ray light source, the computed tomography scanning device, and the imaging method in the present application are able to enable all target spots on the anode target to be distributed on a straight line, imaging quality of a ray system is improved, and complexity of an imaging system is reduced.

What is claimed is: 
     
       1. An anode target, comprising:
 a plurality of target structures, configured to receive electron beams emitted by cathodes to generate rays, the plurality of target structures being of three-dimensional structures having bevels, the bevels of every two adjacent target structures of the plurality of target structures facing towards opposite directions to receive electron beams emitted by the cathodes on two sides of the target structures, wherein every two adjacent target structures of the plurality of target structures are arranged in a staggered manner, and target spots on the bevels of the plurality of target structures arranged in a staggered manner are in the same straight line; 
 a copper cooling body, configured to bear the target structures and including an oxygen-free copper cooling body; 
 a cooling oil tube, configured to cool the anode target; and 
 a shielding layer, configured to achieve a shielding effect and including a tungsten shielding layer. 
 
     
     
       2. The anode target of  claim 1 , wherein material of the target structures includes rhenium-tungsten material. 
     
     
       3. The anode target of  claim 1 , wherein the plurality of target structures are weld to the copper cooling body by braze welding. 
     
     
       4. A ray light source, comprising:
 cathode assemblies, configured to emit electron beams; and 
 an anode assembly, configured to receive the electron beams from the cathode assemblies and generate a ray light source; 
 wherein the anode assembly includes an anode target, and the anode target includes: 
 a plurality of target structures, configured to receive the electron beams emitted by cathode assemblies to generate rays, the plurality of target structures being of three-dimensional structures having bevels, the bevels of every two adjacent target structures of the plurality of target structures facing towards opposite directions to receive electron beams emitted by the cathodes on two sides of the target structures, wherein every two adjacent target structures of the plurality of target structures are arranged in a staggered manner, and target spots on the bevels of the plurality of target structures arranged in a staggered manner are in the same straight line; 
 a copper cooling body, configured to bear the target structures and including an oxygen-free copper cooling body; 
 a cooling oil tube, configured to cool the anode target; and 
 a shielding layer, configured to achieve a shielding effect and including a tungsten shielding layer. 
 
     
     
       5. The ray light source of  claim 4 , wherein the number of the cathode assemblies are equal to or more than two, and the two or more cathode assemblies are arranged on both sides of the anode target in a staggered manner. 
     
     
       6. A computer tomography device, comprising:
 cathode assemblies, configured to emit electron beams; 
 an anode assembly, configured to receive the electron beams from the cathode assemblies and generate a ray light source, wherein the anode assembly includes an anode target, the anode target including:
 a plurality of target structures, configured to receive the electron beams emitted by the cathode assembly to generate rays, the plurality of target structures being of three-dimensional structures having bevels, the bevels of every two adjacent target structures of the plurality of target structures facing towards opposite directions to receive electron beams emitted by the cathode assemblies on two sides of the target structures, wherein every two adjacent target structures of the plurality of target structures are arranged in a staggered manner, and target spots on the bevels of the plurality of target structures arranged in a staggered manner are in the same straight line; 
 a copper cooling body, configured to bear the target structures and including an oxygen-free copper cooling body; 
 a cooling oil tube, configured to cool the anode target; and 
 a shielding layer, configured to achieve a shielding effect and including a tungsten shielding layer; and 
 
 an imaging device, configured to perform ray imaging with the rays. 
 
     
     
       7. The computer tomography device of  claim 6 , wherein the number of the cathode assemblies are equal to or more than two, and the two or more cathode assemblies are arranged on both sides of the anode target in a staggered manner. 
     
     
       8. The computer tomography device of  claim 6 , wherein material of the target structures includes rhenium-tungsten material. 
     
     
       9. The computer tomography device of  claim 6 , wherein the plurality of target structures are weld to the copper cooling body by braze welding.